In 18th-century England, Franco works as a waiter in a tavern, unaware that he's a pirate's illegitimate son. Old corsair John recognizes him as the son he lost track of, and entrusts to him the map of a hidden treasure that also appeals to his enemy, Pirate Blackbeard. Ciccio is an unfortunate Capitan Black who tries to elevate his image as that of a great bloody killer. The two end up sailing together on a pirate ship and decide to follow the directions on the map to find the treasure of the notorious Pirate Flint. Ciccio then proposes to recruit a crew, but he doesn't realize that between the hubs and the people of the sea enters the dreaded pirate Blackbeard, who's seeking revenge because years ago he helped Flint ear the coveted treasure. After some adventures they finally meet Pirate Flint's ghost, who reveals the truth about the treasure.